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Villamanínite, Villamaninite

Year of discovery: 1920 (Providencia mine, Spain), 1973 (Japan)

Locality list: A locality of villamanínite

• CuS₂
• (Cu,Ni,Co,Fe)S₂
• [Cu²⁺][S₂]^2-

• Class: Pyrite group
• Class: Disulfide

• Cu => Fe: Pyrite, Marcasite
• Cu => Ni: Vaesite
• Cu => Co: Cattierite
• Cu => Ru: Laurite
• Cu => Mn: Hauerite
• Cu => Os: Erlichmanite
• Cu => W: Tungstenite
• Cu => Mo: Molybdenite, Jordisite
• Cu => (Cu,Fe): Fukuchilite

• S => Se: Krut'aite

• Color: Black, Greenish black
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Cubic, Octahedral, Fibrous
• Aggregate: Radial
• Twin: Exist

• Cleavage: Perfect on {001} (3 planes)
• Hardness: 4.5
• Density: 4.5

• System: Cubic
• Group: m3, Pa3
• Lattice: a=5.7

Etymology: Villamanín (Villamanin) town in Spain, the address of Providencia mine where this mineral was discovered for the first time.